Door latch



March 4, 1969 P. H. CHOXNIERE DOOR LATCH Filed Aug. '7, 1967 man!! m'/INVENTOR.

United States Patent O 3,431,000 DOOR LATCH Paul H. Choniere, 1544Connie, Madison Heights, Mich. 48071 Filed Aug. 7, 1967, Ser. No.658,729

U.S. Cl. 292-95 1 'Claim Int. Cl. E05c 19/10; E05b 15/02 ABSTRACT F THEDISCLOSURE This invention relates to fastening devices, and particularlyto fastening devices used to prevent opening of building closure meanssuch as doors and windows, and particularly aluminum doors and windowsfor which this device has special features such as simplicity ofconstruction, exceptional holding quality against force applied to openthe closure, utility and ease of application, and cornpact structure.

The advent of aluminum doors and windo-ws created a problem in thatoften the door locks, especially, do not function properly and aresubject to Ibeing opened rather easily from the outside of the home byunauthorized persons, and prior fasteners are not suitable for use withaluminum closure means, because of the construction of such closuremeans.

My invention solves this problem by providing twin fastening means whichis readily applied to the aluminum doors or windows to preventunauthorized opening yof said windows or doors from outside of the homeor building.

It is a further object of my invention to save cost of manufacture, andsimplicity of application by duplication of the outline of the fastenersupports for the support mounted on the door or window and on thebuilding or closure casing. t f

It is another and further object of my invention to pro- 'vide a small,compact fastener that is packaged as an assembly for retail sales.

Other and further objects of this my invention, will become apparentfrom the following description, drawing, and claim, in which:

FIGURE 1 is a front view showing the invention as I have applied same toan aluminum door.

FIGURE 2 is a sectional view taken along line 2 2 of FIG. 1 furtherdisclosing the application of the invention to an aluminum door.

FIGURE 3 is a sectional view taken along line 3-3 of FIGURE 2 disclosingone of the twin latch bases attached to said door.

FIGURE 4 is a sectional view taken along line 4-4 of FIGURE 2 showingthe eye portion of the latch hook attached to the other of the twinlatch bases, and the latch base attached to the door casing.

FIGURE 5 is a perspective view showing the latching device or lfastenerin place on the aluminum door.

FIGURE 6 is a plan view showing the preferred developed blank of thetwin base before forming into the T- shaped outline for use as a latchhook support.

3,431,000 Patented Mar. 4, 1969 lCC Referring now to the drawings, FIGS,l, 2, 3, 4, and 5 particularly, the improved latch is designatedgenerally -by the numeral 10, and is -shown in operative relationship toa typical aluminum storm or screen door 11, in FIG- URE l. Said door hasthe usual hinges (not shown) attaching said door to the door casing 12-which is mounted on the building or home (not shown), and -said latchmeans 10 is secured to the door 11, and casing 12, as shown in thefigures, and in a manner to be described in detail in the followingdescription and claims. Referring to FIG. 2, a typical door frame 13 isshown in cross section and having an outer aluminum frame member 14, andan inner door frame member 15, which support the door glass 16, which isremovable so that a screen may be inserted in said door in lieu of saidwindow glass.

The latch device 10 is comprised of twin base latch supports or bracketsconstructed of a single piece of sheet metal die-formed into a T 17, thecross bar 18 of said T consisting of a single thickness of sheet metal,and the vertical bar or leg 19 of said T consisting of 2 thicknesses ofmetal. The cross bar 18 is provided with 2 openings 21 to receive sheetmetal or wood screws 20, each of said openings 21 are located adjacentthe extremities 22 of said cross bar. A third opening 23 is provided inthe vertical bar 19 adjacent the bottom edge 24 thereof and is adaptedand arranged to receive either the hook end 25 or eye end 26 of thecatch member 27. In operation, one of said twin supports 17 is placed inan appropriate location on said inner door frame member 15 with thecross bar 18 thereof mounted in vertical manner and secured to saidrframe member by sheet metal screw 20 inserted through said openings 21and threaded into said frame -member 15. The catch member 27 is securedto the other twin support 17 by means of annular eye 28 formed at oneend of said catch member, said eye being inserted in opening 23 in theleg or vertical bar 19. The opposite end 29 of said catch member is oftypical hook outline 30 and is adapted to be inserted in opening 23 oft-he twin support mounted on said inner door frame in snap fashion tosecure said door to said casing.

FIGURE 6 discloses a preferred blank development wherein holes oropenings 21 and 23 are punched in the sheet metal strip a-s the shape isblanked out by a die (not shown) and t-hen the strip is formed alongline 31 and reversely bent into the 'aforedescribed T, and the holes 23line up with each other in the T formation. The entire assembly or latchunit 10 is relatively small and may be held in the palm of the hand andpackaged in a'box approximately 3A x 11A" x 31A long.

Having thus fully Vdescribed my invention, I claim:

1. An improved latch for aluminum doors and windows, comprising, incombination, twin support members constructed of a single piece of sheetmetal formed into a T having at least two openings, one each locatedadjacent each extremity of the horizontal cross bar of said T, and athird opening adjacent the bottom end of the vertical bar of said T; oneof said T twins mounted on a casing by screws inserted through saidcross bar openings and threaded into said casing, and the other twin Tmounted on an aluminum movable closure member by sheet metal screwsinserted through said cross bar openings and threaded into said closuremember, and a swinging, substantially short hooked catch member havingan annular eye portion at one end thereof, `and a hook shaped portionformed in the opposite end thereof, said eye portion looped about thevertical bar opening of one of said FOREIGN PATENTS twill TS, and thehOOk portion adapted t0 Snap IlO Said Great Britain. cross bar openingof the oppositely disposed twin T to prevent opening of the closuremember. RICHARD E' MOORE Pn-mm3, Examneh References Cited 5' R. L.WoLFE, Assistant Examiner. UNITED STATES PATENTS 1,037,118 8/1912 Brewer292-281 U.S. C1. X.R. 1,834,678 12/1931 Bryant 292-283 292 101 340

